8 calculators
Money calculators
Quick money math you reach for at the table or the register — tips, splits, and sales tax.
Money
Tip Calculator
Split a bill, calculate a fair tip, and round amounts cleanly across any number of people.
Money
Sales Tax Calculator
Add or remove sales tax from any amount with a precise breakdown of subtotal, tax, and total.
Money
Dividend Calculator
Estimate annual, quarterly, and monthly dividend income from share price, holding size, and dividend yield.
Money
Discount Calculator
Apply a percentage discount to any price and see savings, sale price, and total — with optional sales tax.
Money
Credit Card Payoff Calculator
Estimate how long it takes to pay off a credit card balance and how much interest you'll pay — with extra-payment what-if.
Money
Overtime Calculator
Calculate gross pay from regular and overtime hours at any multiplier (default 1.5×), with effective hourly rate.
Money
Markup Calculator
Find selling price, gross profit, and margin from cost plus markup — or work backwards from cost and selling price.
Money
Roth IRA Calculator
Project the future value of a Roth IRA from current balance, annual contribution, time horizon, and expected return.